1.   Both letters should have arrived.

2.   I mailed them together.

3.   If any letters arrive, please send them on to me in Los Angeles.

4.   Some weeks later, a letter arrived at the little white house on the hill.

5.   The letter arrived, and we prepared ourselves for bad news.

6.   Two weeks later a letter arrived from the solicitors for the archdiocese providing the assurance that we sought.

7.   The letter never arrived.

8.   It must have got lost in the post.

9.   However, three days later a letter arrived, asking me to go to Croydon for an interview.

10.   Have you tried to get in touch with the doctor since the letter arrived?